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/* -------------------------------------------
Copyright ZKA Technologies.
------------------------------------------- */
#include <KernelKit/FileManager.hxx>
#include <NewKit/Utils.hxx>
/// BUGS: 0
//! @brief File manager for Kernel.
namespace Kernel
{
STATIC FilesystemManagerInterface* kMounted = nullptr;
/// @brief FilesystemManager getter.
/// @return The mounted filesystem.
_Output FilesystemManagerInterface* FilesystemManagerInterface::GetMounted()
{
return kMounted;
}
/// @brief Unmount filesystem.
/// @return The unmounted filesystem.
_Output FilesystemManagerInterface* FilesystemManagerInterface::Unmount()
{
if (kMounted)
{
auto mount = kMounted;
kMounted = nullptr;
return mount;
}
return nullptr;
}
/// @brief Mount filesystem.
/// @param mount_ptr The filesystem to mount.
/// @return if it succeeded true, otherwise false.
bool FilesystemManagerInterface::Mount(_Input FilesystemManagerInterface* mount_ptr)
{
if (mount_ptr != nullptr)
{
kMounted = mount_ptr;
return true;
}
return false;
}
#ifdef __FSKIT_USE_NEWFS__
/// @brief Opens a new file.
/// @param path
/// @param r
/// @return
_Output NodePtr NewFilesystemManager::Open(_Input const Char* path, _Input const Char* r)
{
if (!path || *path == 0)
return nullptr;
if (!r || *r == 0)
return nullptr;
auto catalog = fImpl->GetCatalog(path);
if (catalog->Kind != kNewFSCatalogKindFile)
{
fImpl->CloseCatalog(catalog);
return nullptr;
}
return node_cast(catalog);
}
/// @brief Writes to a catalog's fork.
/// @param node the node ptr.
/// @param data the data.
/// @param flags the size.
/// @return
Void NewFilesystemManager::Write(_Input NodePtr node, _Input VoidPtr data, _Input Int32 flags, _Input SizeT size)
{
if (!node)
return;
if (!size)
return;
constexpr auto cDataForkName = kNewFSDataFork;
this->Write(cDataForkName, node, data, flags, size);
}
/// @brief Read from filesystem fork.
/// @param node the catalog node.
/// @param flags the flags with it.
/// @param sz the size to read.
/// @return
_Output VoidPtr NewFilesystemManager::Read(_Input NodePtr node, _Input Int32 flags, _Input SizeT size)
{
if (!node)
return nullptr;
if (!size)
return nullptr;
constexpr auto cDataForkName = kNewFSDataFork;
return this->Read(cDataForkName, node, flags, size);
}
Void NewFilesystemManager::Write(_Input const Char* name,
_Input NodePtr node,
_Input VoidPtr data,
_Input Int32 flags,
_Input SizeT size)
{
if (!size ||
size > kNewFSForkSize)
return;
if (!data)
return;
NEWOS_UNUSED(flags);
if ((reinterpret_cast<NFS_CATALOG_STRUCT*>(node))->Kind == kNewFSCatalogKindFile)
fImpl->WriteCatalog(reinterpret_cast<NFS_CATALOG_STRUCT*>(node), data, size,
name);
}
_Output VoidPtr NewFilesystemManager::Read(_Input const Char* name,
_Input NodePtr node,
_Input Int32 flags,
_Input SizeT sz)
{
if (sz > kNewFSForkSize)
return nullptr;
if (!sz)
return nullptr;
NEWOS_UNUSED(flags);
if ((reinterpret_cast<NFS_CATALOG_STRUCT*>(node))->Kind == kNewFSCatalogKindFile)
return fImpl->ReadCatalog(reinterpret_cast<NFS_CATALOG_STRUCT*>(node), sz,
name);
return nullptr;
}
/// @brief Seek from Catalog.
/// @param node
/// @param off
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output Bool NewFilesystemManager::Seek(NodePtr node, SizeT off)
{
if (!node || off == 0)
return false;
return fImpl->Seek(reinterpret_cast<NFS_CATALOG_STRUCT*>(node), off);
}
/// @brief Tell where the catalog is.
/// @param node
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output SizeT NewFilesystemManager::Tell(NodePtr node)
{
if (!node)
return kNPos;
return fImpl->Tell(reinterpret_cast<NFS_CATALOG_STRUCT*>(node));
}
/// @brief Rewinds the catalog.
/// @param node
/// @retval true always returns false, this is unimplemented.
/// @retval false always returns this, it is unimplemented.
_Output Bool NewFilesystemManager::Rewind(NodePtr node)
{
if (!node)
return false;
return this->Seek(node, 0);
}
/// @brief Returns the filesystem parser.
/// @return the Filesystem parser class.
_Output NewFSParser* NewFilesystemManager::GetParser() noexcept
{
return fImpl;
}
#endif // __FSKIT_USE_NEWFS__
} // namespace Kernel
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